Estádio: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Vaasa | 2023/06/09 11:10 | Tom Gentzsch v Nicolas Kobelt | 6-3,6-7,6-1 |
| ITF - M15 Monastir | 2023/11/08 08:30 | Kalman Boyd v Nicolas Kobelt | 6-3,4-6,4-6 |
| ITF - M15 Danderyd | 2023/09/19 11:30 | Nicolas Kobelt v Yannik Steinegger | 2-6,4-6 |
| ITF - M15 Caslano | 2023/08/22 07:00 | Nicolas Kobelt v Patrick Zahraj | 3-6,1-6 |
| ITF - M25 Ystad | 2023/08/16 08:45 | Nicolas Kobelt v Markus Bolin | 6-7,3-6 |
| Challenger - Zug | 2023/07/23 09:00 | Eduardo Ribeiro v Nicolas Kobelt | 6-3,6-2 |
| ITF - M25 Uriage | 2023/07/13 13:00 | Nicolas Kobelt v Ugo Blanchet | 5-7,1-6 |
| ITF - M25 Uriage | 2023/07/11 16:00 | Nicolas Kobelt v Tiago Pires | 6-2,7-6 |
| ITF - M25 Klosters | 2023/07/04 08:55 | Raphael Baltensperger v Nicolas Kobelt | 5-7,6-4,6-1 |
| ITF - M15 Monastir | 2023/11/08 10:25 | Nazim Makhlouf v Tom Gentzsch | 3-6,3-6 |
| Challenger - Ismaning | 2023/10/30 14:15 | Andrew Paulson v Tom Gentzsch | 3-6,7-6,7-6 |
| Challenger - Ismaning | 2023/10/29 15:50 | Tom Gentzsch v Elmar Ejupovic | 7-6,7-6 |
| ITF - M15 Monastir | 2023/10/20 08:30 | Mohamed Aziz Dougaz v Tom Gentzsch | 6-1,6-4 |
| ITF - M15 Monastir | 2023/10/19 08:00 | Samir Hamza Reguig v Tom Gentzsch | 2-6,4-6 |
| ITF - M15 Monastir | 2023/10/17 10:05 | Yuta Kikuchi v Tom Gentzsch | 2-6,6-7 |
| ITF - M15 Monastir | 2023/10/14 09:50 | Maxence Beauge v Tom Gentzsch | 7-6,6-2 |
| ITF - M15 Monastir | 2023/10/13 08:00 | Adrien Gobat v Tom Gentzsch | 2-6,4-6 |